Company lists · Data refreshed September 2026

Top 25 Donor engagement marketing agencies worldwide

Name: Donor engagement marketing agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,641 companies tracked

RevenueBase identified 2,641 donor engagement marketing agencies worldwide as of September 2026 and tracks 23,845 professional contacts across them, including 7,334 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers donor engagement marketing agencies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026. Country and city lists for donor engagement marketing agencies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

2,641Companies

23,845Contacts tracked

7,334Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest donor engagement marketing agencies worldwide

Ranked by team size

Top 25 of 2,641 donor engagement marketing agencies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to donor engagement marketing agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Lucas Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	10001+	756 contacts →
	Partial evidence “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: RevenueBase Database · checked Sep 28, 2026
2	CCS Fundraising	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	728 contacts →
	Indirect evidence “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Source: RevenueBase Database · checked Sep 28, 2026
3	Appco UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	559 contacts →
	Partial evidence “Appco UK is an expert at designing, planning, managing, executing and analysing field marketing and fundraising campaigns.” Source: RevenueBase Database · checked Sep 28, 2026
4	RKD Group	Indirect evidence	Plano, TX, United StatesHQ checked Sep 28, 2026	201-500	492 contacts →
	Indirect evidence “RKD Group is the trusted growth architect for nonprofits.” Source: RevenueBase Database · checked Sep 28, 2026
5	Ministry Brands	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	501-1,000	461 contacts →
	Indirect evidence “We help more than purpose-driven organizations grow and amplify their impact on the world by providing transformative technology and services that enable organizations to grow…” Source: RevenueBase Database · checked Sep 28, 2026
6	Innovairre	Indirect evidence	Cherry Hill, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	342 contacts →
	Indirect evidence “Our motto says it all: We Help People Who Help People.” Source: RevenueBase Database · checked Sep 28, 2026
7	Reingold, INC	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 28, 2026	201-500	282 contacts →
	Partial evidence “Reingold is a full-service strategic communications and marketing firm, helping clients tell stories that get results.” Source: RevenueBase Database · checked Sep 28, 2026
8	Truesense Marketing	Partial evidence	Warrendale, PA, United StatesHQ checked Sep 28, 2026	201-500	280 contacts →
	Partial evidence “TrueSense Marketing is a full-service, strategic, direct response fundraising agency and direct mail marketing company.” Source: RevenueBase Database · checked Sep 28, 2026
9	The Heritage Company	Partial evidence	United StatesHQ checked Sep 28, 2026	501-1,000	197 contacts →
	Partial evidence “Nonprofit Organizations count on The Heritage Company for fundraising and outreach to donors, members and other constituents.” Source: RevenueBase Database · checked Sep 28, 2026
10	BOOM	Partial evidence	Chagrin Falls, United StatesHQ checked Sep 28, 2026	n/a	195 contacts →
	Partial evidence “At Boom, we develop cross-media strategic marketing and public relations for our clients that convince their target audience to solicit their business, attend their event or…” Source: RevenueBase Database · checked Sep 28, 2026
11	Virtuous	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	51-200	191 contacts →
	Indirect evidence “Our mission is to move the needle on global generosity by helping nonprofits better connect with and inspire their supporters.” Source: RevenueBase Database · checked Sep 28, 2026
12	Masterworks	Partial evidence	Poulsbo, WA, United StatesHQ checked Sep 28, 2026	51-200	170 contacts →
	Partial evidence “Masterworks is a marketing and fundraising agency that helps Christian organizations of all shapes and sizes fully accomplish their missions in the world by providing a complete…” Source: RevenueBase Database · checked Sep 28, 2026
13	Summit Marketing	Partial evidence	Lenexa, KS, United StatesHQ checked Sep 28, 2026	51-200	158 contacts →
	Partial evidence “Summit Marketing is an integrated marketing communications firm with a track record of success in fundraising for nonprofit organizations and in sales and channel development for…” Source: RevenueBase Database · checked Sep 28, 2026
14	AGP Allegiance Group & Pursuant	Strong evidence	Fargo, ND, United StatesHQ checked Sep 28, 2026	51-200	137 contacts →
	Strong evidence “AGP partners with mission-driven organizations nationwide to strengthen donor engagement and support long-term, sustainable performance.” Source: RevenueBase Database · checked Sep 28, 2026
15	SG Support	Indirect evidence	Kuala Lumpur Central, MalaysiaHQ checked Sep 28, 2026	201-500	137 contacts →
	Indirect evidence “We exist to support non-profits as they carry out their world-changing missions.” Source: RevenueBase Database · checked Sep 28, 2026
16	ARGUS	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	11-50	133 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
17	Torchbox	Indirect evidence	Bristol, United KingdomHQ checked Sep 28, 2026	51-200	120 contacts →
	Indirect evidence “Torchbox is an employee-owned digital agency and a certified B Corp.” Source: RevenueBase Database · checked Sep 28, 2026
18	Imarketing	Partial evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	501-1,000	113 contacts →
	Partial evidence “iMarketing is North America’s pre-eminent integrated direct-marketing services company.” Source: RevenueBase Database · checked Sep 28, 2026
19	MAL Warwick Donordigital	Strong evidence	Berkeley, CA, United StatesHQ checked Sep 28, 2026	51-200	112 contacts →
	Strong evidence “Our team of expert consultants develops innovative direct marketing-driven donor development programs for exceptional nonprofit causes like yours.” Source: RevenueBase Database · checked Sep 28, 2026
20	The Stelter Company	Partial evidence	West Des Moines, IA, United StatesHQ checked Sep 28, 2026	51-200	109 contacts →
	Partial evidence “In business since 1962, The Stelter Company is an integrated marketing agency that provides nonprofits with the insights and strategies needed to optimize revenue across the…” Source: RevenueBase Database · checked Sep 28, 2026
21	Zuri Group	Indirect evidence	Bend, OR, United StatesHQ checked Sep 28, 2026	51-200	106 contacts →
	Indirect evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 28, 2026
22	Direct Dialogue Initiatives India Pvt. LTD	Partial evidence	Bangalore, IndiaHQ checked Sep 28, 2026	201-500	99 contacts →
	Partial evidence “Direct Dialogue Initiatives aims to provide ethical fundraising and public engagement services to civil society organisations working in the development sector in India.” Source: RevenueBase Database · checked Sep 28, 2026
23	BDI	Partial evidence	Monrovia, CA, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Partial evidence “OUR AGENCY: BDI is a full-service, omni-channel, marketing and fundraising agency for nonprofits.” Source: RevenueBase Database · checked Sep 28, 2026
24	UP Fundraising	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	90 contacts →
	Partial evidence “Up Fundraising is an Experiential Fundraising, Marketing and Brand Building company.” Source: RevenueBase Database · checked Sep 28, 2026
25	HJC	Indirect evidence	Toronto, CanadaHQ checked Sep 28, 2026	11-50	90 contacts →
	Indirect evidence “Our mission is to provide leadership to nonprofit organizations in using new technologies to market, fundraise, advocate and brand build more effectively.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: donor engagement marketing agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names donor engagement marketing agencies.
Partial evidence: Its own public description names part of donor engagement marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name donor engagement marketing agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,641 donor engagement marketing agencies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 7,334 reachable decision-makers.

Free signup · no credit card

View the full list →

Donor engagement marketing agencies worldwide at a glance

As of Sep 28, 2026

30.8%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,912

11-50

558

51-200

128

201-500

501-1,000

1,001-5,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among donor engagement marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for donor engagement marketing agencies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “donor engagement marketing agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names donor engagement marketing agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among donor engagement marketing agencies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 7,334 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Donor engagement marketing agencies by location

14 lists · largest first

Every Donor engagement marketing agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names donor engagement marketing agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many donor engagement marketing agencies are there worldwide?

RevenueBase identified 2,641 donor engagement marketing agencies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Lucas Group, headquartered in Los Angeles, tops this list with the largest team on record.

Which country has the most donor engagement marketing agencies?

The United States leads with 1,366 companies, followed by the United Kingdom (154) and Canada (143). Every donor engagement marketing agencies list by country and city is linked on this page.

Which city has the most donor engagement marketing agencies?

New York leads with 68 headquartered companies, followed by London (54) and Washington (53).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 7,334 verified decision-maker contacts tracked across these 2,641 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,641 donor engagement marketing agencies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.